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  <script>
    /* 
      splice() 
        方法可通过指定的索引号和个数，提取数组的某个部分
      语法：
        数组名.splice(start[, number]);
          start    (必需)：规定开始选取索引号
          number   (可选)：元素的个数。
      注意：原数组受到影响            
    */

    let arr = ['张飞0', '关羽1', '刘备2', '猴子3', '黑鸟4', '剑圣5'];

    // let arr2 = arr.splice(2, 2);
    let arr2 = arr.splice(2);
    console.log(arr2);
    console.log(arr);
  </script>
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